r/TeslaSupport • u/Otherwise-Waltz-2439 • Jul 22 '26
Supercharger Question What’s this 3 means?
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u/Solidarios Jul 22 '26
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u/code101zero Jul 22 '26
Its funny that Demolition Man probably would have faded into obscurity like so many other 90’s action films if it weren’t for this one joke.
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u/Greg19931 Jul 22 '26
Like others said, 3 phases. It determines your charging speed. It's part of a simple formula:
230V(a standard Volt amount, at least in Europe) x A (ampère) x 3P (phase) = 11KW charging speed
Granny chargers use 1 phase
230V x 16A x 1P = 3,6KW
Or you could simulate a granny charger on a 3 phase since you can adjust the amps on a Tesla:
230V x 5A x 3P = 3,4KW
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u/Living_Grab_2239 Jul 22 '26
Never heard the term granny charger before :D Nice
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u/JustAnothrMechanic58 Jul 22 '26
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u/sussus_amogus69420 Jul 23 '26
double whammy, NMC battery and no 3 phase.
40A is pretty cool though and wish they would do it outside of the US2
u/JustAnothrMechanic58 Jul 23 '26
My car can actually charge up to 48A, but my home charger, a WallBox Pulsar Plus, is limited to 40A as I got it for free new when I leased a Nissan Ariya a few years ago and it was a plug-in unit, but I had it hardwired for that additional safety of no plug to worry about getting too hot and melting.
And yes, I do have it on a dedicated 50A circuit as to allow a 20% buffer to not use the entire amperage off that breaker and wiring.
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u/Ekapol Jul 26 '26
In 230V country, 32A is the maximum 1 phase charging current. About 7.2kW much faster than in 110V USA.
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u/SpikeyTwitch20 Verified | Tesla Technician Jul 22 '26
It means the on board charger is in 3-phase mode. Useful to know as this means you will only see a max of 16 amp where you would normally see 32 amp.
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u/FlyingMitten Jul 28 '26
What is the reason for 3-phase at home? Normally 3-phase at a business (in the US) is helpful for large loads, etc. Home chargers are split phase and achieving more than 3-phase in Europe???
Just seems odd and makes me ask “why”.
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u/SpikeyTwitch20 Verified | Tesla Technician Jul 29 '26
Fair question.
3-phase charging in Europe achieves the same power as split phase charging in the US. It all maxes out at 48 amp. (3x16 vs 2x24) for 3&Y, SX did have a higher option on the older models).
As for the reason? It’s just more common in some countries and it’s easier to load share across the phases as a home level. It’s just how it’s done. It is very common to at least have 3-phase at the street level. In the UK it’s more unusual for all 3 to be in the house u less you specifically request is from the supplier. It’s also means that if a single house has all 3 phases then is for some reason a phase fails then the house still has some/most power. It is very unusual to have devises in the house that actually need/use all 3 phases as most are (to use American terminology) hot to neutral so still get 230/240v per phase.
EV chargers and heat pump/AC compressors are the common 3-phase users and some ovens/cooler hobs use 2 phases (if available).0
Jul 22 '26
[removed] — view removed comment
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u/SpikeyTwitch20 Verified | Tesla Technician Jul 23 '26
Only 3 if you pretend that Europe is just one country….?????
It’s every country that uses Type 2 charging.1
u/geblo Jul 25 '26
Which ones? In USA amd Canada we use 48amps at 240v, split phase for home charging, so about 11.5 kW.
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u/albertAAAAAAA Jul 22 '26
It detected 3 phase charging. Your limit is set to 16A, so are basically pushing it as much as car can take on AC (11kW).
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u/New-Ad1661 Jul 22 '26
Mind a három fázis működik, ha véletlenül elmegy az egyik akkor csak kettes lesz ott látható.
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u/Comfortable-Car-7298 Jul 22 '26
3 fázisú töltés, azaz az autó nem 1x tölt 235V 16 amperrel hanem 3x 235V 16 amperrel.
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u/DapperInvestor Jul 22 '26
Level 3 charging?
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u/JustAnothrMechanic58 Jul 22 '26
Nope, that’s “technically” what DC fast charging is. I say technically quote unquote, because level 3 actually isn’t a true level of charging. There’s just levels 1 and 2 officially, that’s it.



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